| 摘要 |
PROBLEM TO BE SOLVED: To provide a color selection scheme for watermarking digital video by which chrominance portions to be watermarked is selected. SOLUTION: Determining a chrominance portion to be watermarked employs a perception-based table that indicates for various pixel values which of the chrominance portions, if any, should be selected for watermarking. Only the Y, U, and V values of a pixel are needed to access the table and determine which chrominance portion should be selected. However, the table may be modified so that it may indicate which of U or V should be selected, or that neither should be selected, indicating that this pixel should not be watermarked at all. COPYRIGHT: (C)2005,JPO&NCIPI |
